3 files changed, 28 insertions, 24 deletions

diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
index 84186a7d17b2..ee5419b8f1b1 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/events/evgpeblk.c
@@ -66,7 +66,7 @@ acpi_ev_match_prw_and_gpe (
 
 static struct acpi_gpe_xrupt_info *
 acpi_ev_get_gpe_xrupt_block (
-        u32                             interrupt_level);
+        u32                             interrupt_number);
 
 static acpi_status
 acpi_ev_delete_gpe_xrupt (
@@ -75,7 +75,7 @@ acpi_ev_delete_gpe_xrupt (
 static acpi_status
 acpi_ev_install_gpe_block (
         struct acpi_gpe_block_info      *gpe_block,
-        u32                             interrupt_level);
+        u32                             interrupt_number);
 
 static acpi_status
 acpi_ev_create_gpe_info_blocks (
@@ -482,7 +482,7 @@ cleanup:
  *
  * FUNCTION:    acpi_ev_get_gpe_xrupt_block
  *
- * PARAMETERS:  interrupt_level     - Interrupt for a GPE block
+ * PARAMETERS:  interrupt_number     - Interrupt for a GPE block
  *
  * RETURN:      A GPE interrupt block
  *
@@ -495,7 +495,7 @@ cleanup:
 
 static struct acpi_gpe_xrupt_info *
 acpi_ev_get_gpe_xrupt_block (
-        u32                             interrupt_level)
+        u32                             interrupt_number)
 {
         struct acpi_gpe_xrupt_info      *next_gpe_xrupt;
         struct acpi_gpe_xrupt_info      *gpe_xrupt;
@@ -509,7 +509,7 @@ acpi_ev_get_gpe_xrupt_block (
 
         next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
         while (next_gpe_xrupt) {
-                if (next_gpe_xrupt->interrupt_level == interrupt_level) {
+                if (next_gpe_xrupt->interrupt_number == interrupt_number) {
                         return_PTR (next_gpe_xrupt);
                 }
 
@@ -523,7 +523,7 @@ acpi_ev_get_gpe_xrupt_block (
                 return_PTR (NULL);
         }
 
-        gpe_xrupt->interrupt_level = interrupt_level;
+        gpe_xrupt->interrupt_number = interrupt_number;
 
         /* Install new interrupt descriptor with spin lock */
 
@@ -544,13 +544,13 @@ acpi_ev_get_gpe_xrupt_block (
 
         /* Install new interrupt handler if not SCI_INT */
 
-        if (interrupt_level != acpi_gbl_FADT->sci_int) {
-                status = acpi_os_install_interrupt_handler (interrupt_level,
+        if (interrupt_number != acpi_gbl_FADT->sci_int) {
+                status = acpi_os_install_interrupt_handler (interrupt_number,
                                  acpi_ev_gpe_xrupt_handler, gpe_xrupt);
                 if (ACPI_FAILURE (status)) {
                         ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
                                 "Could not install GPE interrupt handler at level 0x%X\n",
-                                interrupt_level));
+                                interrupt_number));
                         return_PTR (NULL);
                 }
         }
@@ -584,14 +584,14 @@ acpi_ev_delete_gpe_xrupt (
 
         /* We never want to remove the SCI interrupt handler */
 
-        if (gpe_xrupt->interrupt_level == acpi_gbl_FADT->sci_int) {
+        if (gpe_xrupt->interrupt_number == acpi_gbl_FADT->sci_int) {
                 gpe_xrupt->gpe_block_list_head = NULL;
                 return_ACPI_STATUS (AE_OK);
         }
 
         /* Disable this interrupt */
 
-        status = acpi_os_remove_interrupt_handler (gpe_xrupt->interrupt_level,
+        status = acpi_os_remove_interrupt_handler (gpe_xrupt->interrupt_number,
                            acpi_ev_gpe_xrupt_handler);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
@@ -621,7 +621,7 @@ acpi_ev_delete_gpe_xrupt (
  * FUNCTION:    acpi_ev_install_gpe_block
  *
  * PARAMETERS:  gpe_block       - New GPE block
- *              interrupt_level - Level to be associated with this GPE block
+ *              interrupt_number - Xrupt to be associated with this GPE block
  *
  * RETURN:      Status
  *
@@ -632,7 +632,7 @@ acpi_ev_delete_gpe_xrupt (
 static acpi_status
 acpi_ev_install_gpe_block (
         struct acpi_gpe_block_info      *gpe_block,
-        u32                             interrupt_level)
+        u32                             interrupt_number)
 {
         struct acpi_gpe_block_info      *next_gpe_block;
         struct acpi_gpe_xrupt_info      *gpe_xrupt_block;
@@ -647,7 +647,7 @@ acpi_ev_install_gpe_block (
                 return_ACPI_STATUS (status);
         }
 
-        gpe_xrupt_block = acpi_ev_get_gpe_xrupt_block (interrupt_level);
+        gpe_xrupt_block = acpi_ev_get_gpe_xrupt_block (interrupt_number);
         if (!gpe_xrupt_block) {
                 status = AE_NO_MEMORY;
                 goto unlock_and_exit;
@@ -887,7 +887,7 @@ error_exit:
  *              gpe_block_address   - Address and space_iD
  *              register_count      - Number of GPE register pairs in the block
  *              gpe_block_base_number - Starting GPE number for the block
- *              interrupt_level     - H/W interrupt for the block
+ *              interrupt_number    - H/W interrupt for the block
  *              return_gpe_block    - Where the new block descriptor is returned
  *
  * RETURN:      Status
@@ -902,7 +902,7 @@ acpi_ev_create_gpe_block (
         struct acpi_generic_address     *gpe_block_address,
         u32                             register_count,
         u8                              gpe_block_base_number,
-        u32                             interrupt_level,
+        u32                             interrupt_number,
         struct acpi_gpe_block_info      **return_gpe_block)
 {
         struct acpi_gpe_block_info      *gpe_block;
@@ -948,7 +948,7 @@ acpi_ev_create_gpe_block (
 
         /* Install the new block in the global list(s) */
 
-        status = acpi_ev_install_gpe_block (gpe_block, interrupt_level);
+        status = acpi_ev_install_gpe_block (gpe_block, interrupt_number);
         if (ACPI_FAILURE (status)) {
                 ACPI_MEM_FREE (gpe_block);
                 return_ACPI_STATUS (status);
@@ -1013,7 +1013,7 @@ acpi_ev_create_gpe_block (
                                 ((gpe_block->register_count * ACPI_GPE_REGISTER_WIDTH) -1)),
                 gpe_device->name.ascii,
                 gpe_block->register_count,
-                interrupt_level));
+                interrupt_number));
 
         /* Enable all valid GPEs found above */
 
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index 95bc09c73a6a..f2d53af97610 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -218,10 +218,14 @@ acpi_ev_pci_config_region_setup (
                 while (pci_root_node != acpi_gbl_root_node) {
                         status = acpi_ut_execute_HID (pci_root_node, &object_hID);
                         if (ACPI_SUCCESS (status)) {
-                                /* Got a valid _HID, check if this is a PCI root */
-
+                                /*
+                                 * Got a valid _HID string, check if this is a PCI root.
+                                 * New for ACPI 3.0: check for a PCI Express root also.
+                                 */
                                 if (!(ACPI_STRNCMP (object_hID.value, PCI_ROOT_HID_STRING,
-                                                   sizeof (PCI_ROOT_HID_STRING)))) {
+                                                   sizeof (PCI_ROOT_HID_STRING))           ||
+                                        !(ACPI_STRNCMP (object_hID.value, PCI_EXPRESS_ROOT_HID_STRING,
+                                                          sizeof (PCI_EXPRESS_ROOT_HID_STRING))))) {
                                         /* Install a handler for this PCI root bridge */
 
                                         status = acpi_install_address_space_handler ((acpi_handle) pci_root_node,
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index f337dc2cc569..c5f74d7b64d8 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -635,7 +635,7 @@ unlock_and_exit:
  * PARAMETERS:  gpe_device          - Handle to the parent GPE Block Device
  *              gpe_block_address   - Address and space_iD
  *              register_count      - Number of GPE register pairs in the block
- *              interrupt_level     - H/W interrupt for the block
+ *              interrupt_number    - H/W interrupt for the block
  *
  * RETURN:      Status
  *
@@ -648,7 +648,7 @@ acpi_install_gpe_block (
         acpi_handle                     gpe_device,
         struct acpi_generic_address     *gpe_block_address,
         u32                             register_count,
-        u32                             interrupt_level)
+        u32                             interrupt_number)
 {
         acpi_status                     status;
         union acpi_operand_object       *obj_desc;
@@ -681,7 +681,7 @@ acpi_install_gpe_block (
          * is always zero
          */
         status = acpi_ev_create_gpe_block (node, gpe_block_address, register_count,
-                          0, interrupt_level, &gpe_block);
+                          0, interrupt_number, &gpe_block);
         if (ACPI_FAILURE (status)) {
                 goto unlock_and_exit;
         }